1999 chevy tahoe 350 CI with 125K miles set a code 0306 misfire in cylinder 6. Changed plugs. wires, cap rotor no help. Then changed the injector for #6 cylinder - still no help. only appears to set code in the first 5 minutes of operation when cold. I can drive it after that for 50 miles - no code. shut down for 3 hours and restart - code back in couple of minutes. I also have a very noticable but short lived ( 30 seconds) lifter noise (intermitent, doesnt always occur) only at start up. Should I go ahead and pull head looking for valve problem.
Feb 16, 2009 at 4:43 PM